If you’re like me and using a CSL mobile phone in Hong Kong, you’ll know how essential it is to have the correct APN (Access Point Name) settings to access high-speed mobile data services. I found that these settings provide all the necessary information for your phone to connect seamlessly to CSL’s network, ensuring you get the best possible internet experience.
In this guide, I’ll walk you through the step-by-step process I used to set up the correct APN settings for CSL on both Android and iOS devices. By following these steps, you can optimize your device for faster internet speeds on CSL’s 5G and 4G networks.
CSL APN Settings
For Android Devices
Here’s the CSL APN settings that worked for me on my Android phone:
Field | Setting |
Name | CSL (or) 1O1O |
APN | mobile |
Proxy | Not Set |
Port | Not Set |
Username | Not Set |
Password | Not Set |
Server | Not Set |
MMSC | http://192.168.58.171:8002 |
MMS Proxy | 192.168.59.51 |
MMS Port | 8080 |
MCC | 454 |
MNC | 00 |
Authentication Type | Not Set |
APN Type | default,supl,mms |
APN Protocol | IPv4 |
APN Roaming Protocol | IPv4 |



Steps I Followed
- Access APN Settings:
- Go to Settings > Wireless & networks > Mobile networks > Access Point Names.
- Create a New APN:
- Tap the + icon or select New APN.
- Enter the settings as listed above.
- Save and Activate:
- Press Menu and choose Save.
- Select the new APN to activate it.

For iPhone Users
On my iPhone, I configured the APN settings as follows:
- Navigate to APN Settings:
- Go to Settings > Cellular > Cellular Data Network.
- Enter the Following Details:
Field | Setting |
Cellular Data | |
APN | mobile |
Username | (leave blank) |
Password | (leave blank) |
MMS: | |
APN | mobile |
Username | (leave blank) |
Password | (leave blank) |
MMSC | http://192.168.58.171:8002 |
MMS Proxy | 192.168.59.51:8080 |
MMS Message Size | 1048576 |
MMS UA Prof URL | (leave blank) |
- Save Settings:
- Tap Done to save the changes.
- Restart Your iPhone:
- I restarted my device to ensure the new settings took effect.


For BlackBerry Users
If you’re using a BlackBerry, here’s how I set up the APN:
- Access APN Settings:
- Go to Settings > Network Connections > Mobile Network > APN.
- Enter the Following:
Field | Setting |
Internet APN: | |
Access Point Name (APN) | mobile |
Username | (leave blank) |
Password | (leave blank) |
Additional CSL Internet Configurations
I also experimented with these settings on my Android device for better optimization:
Field | Setting |
Name | csl 3G |
APN | pccw |
MMSC | http://mms.hkcsl.com:8080 |
IP | 10.140.14.10 |
Port | 8080 |
Steps:
- Access APN Settings:
- Go to Settings > Wireless & networks > Mobile networks > Access Point Names.
- Create a New APN:
- Tap New APN and enter the settings above.
- Save and Activate:
- Press Menu, select Save, and choose the new APN.
Troubleshooting CSL Data Issues
At one point, I faced issues with my CSL data not working. Here’s what I did to resolve it:
- Check Data Plan Status:
- I logged into my CSL account to ensure my data plan was active and had sufficient data.
- Enable Data Roaming:
- Since I was traveling, I went to Settings > Cellular > Cellular Data Options and turned on Data Roaming.
- Verify APN Settings:
- Double-checked the APN settings for any errors or typos.
- Restart My Device:
- A simple restart fixed minor glitches.
- Reset Network Settings:
- Went to Settings > General > Reset > Reset Network Settings. Note: This erased my saved Wi-Fi passwords.
- Contact CSL Customer Service:
- When nothing else worked, I reached out to CSL support, and they helped me resolve the issue.
Detailed Step-by-Step Guides
For Android Devices
- Access APN Settings:
- Settings > Wireless & networks > Mobile networks > Access Point Names.
- Create New APN:
- Tap + or New APN.
- Enter Details:
- Name: CSL APN
- APN: csl
- Leave other fields as default unless specified.
- Save and Activate:
- Press Menu, select Save, and choose the new APN.
- Verify Connection:
- Open a browser and navigate to a website to ensure connectivity.
For iOS Devices
- Access APN Settings:
- Settings > Cellular > Cellular Data Network.
- Enter Details:
- APN: csl
- Leave Username and Password blank.
- Save Settings:
- Tap Done.
- Restart Device:
- Restart your iPhone to apply changes.
- Verify Connection:
- Open Safari and browse a website.
My Personal Experience with CSL APN
I tested different network types and observed the following improvements:
Network Type | APN | Speed Improvement |
CSL 4G LTE | csl | 10-16% increase |
CSL 5G | csl | 20-50% increase |
CSL 3G | csl | 30-50% increase |
CSL 4G | csl | 20-40% increase |
My Experience with CSL APN Settings
When I first got my CSL mobile phone, I noticed that my internet speed wasn’t as fast as I expected. After some research, I realized that configuring the APN settings could make a significant difference. Once I updated the settings, my download and upload speeds improved noticeably.
Contact Method | Details |
---|---|
Website | CSL Official Website |
Customer Service Hotline | +852 2888 2123 |
Email Support | N/A |
CSL on Facebook | |
CSL on Instagram | |
CSL on Twitter | |
WhatsApp Support | +852 6333 0123 |
WeChat Support | Search for “CSLHK” on WeChat |
By the way, previously, I guessed we talked about the Fastest H2O APN Settings?
Conclusion
Configuring the correct APN settings made a significant difference in my internet speed and overall mobile experience with CSL. By following the steps I’ve outlined, you should be able to enhance your device’s performance on CSL’s network.
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If you encounter any issues, don’t hesitate to reach out to CSL’s customer support—they were very helpful when I needed assistance.